Water desalination mechanism

Abstract

A water desalination mechanism, including: a running pipe, for fresh water; a venturi arrangement, having a first venturi nozzle, a second venturi nozzle and a branch between; the first and second nozzles; a container divided by a reverse osmosis membrane into a first side and a second side and having: a first side inlet, for contaminated water; a first side outlet, for remaining salts and/or minerals; and a second side outlet, for desalinated water.

The invention claimed is: 
     
       1. A water desalination mechanism [ 100 ], comprising:
 a. a running pipe [ 110 ] of pressurized fresh municipal water; 
 b. a venturi arrangement [ 120 ] for creating vacuum, said venturi arrangement [ 120 ] having a first venturi nozzle [ 121 ], a second venturi nozzle [ 122 ] and a branch [ 123 ] arranged therebetween; said first and second nozzles [ 121 ,  122 ] are connected to said pipe [ 110 ]; 
 c. a container [ 130 ] divided by a reverse osmosis membrane [ 135 ] into a first side [ 140 ] and a second side [ 150 ]; 
 d. a first side inlet [ 145 ] connected to a source of contaminated water; 
 e. a first side outlet [ 146 ] for disposing remaining salts and/or minerals; and 
 f. a second side outlet [ 156 ] for desalinated water; 
 
       wherein said second side outlet [ 156 ] is connected to said venturi's branch [ 123 ], thereby making use of the vacuum created by said venturi arrangement [ 120 ] to draw said desalinated water from said contaminated water via said reverse osmosis membrane [ 135 ] and direct said desalinated water to said pipe [ 110 ]. 
     
     
       2. The water desalination mechanism [ 100 ] according to  claim 1 , wherein said desalination mechanism [ 100 ] further comprises a measuring unit [ 126 ] to measure the amount of said desalinated water directed to said pipe [ 110 ]. 
     
     
       3. The water desalination mechanism [ 100 ] according to  claim 1 , wherein said first side inlet [ 145 ] is connected to said pipe [ 110 ] upstream of said first venturi nozzle [ 121 ]. 
     
     
       4. A water desalination mechanism [ 200 ], comprising:
 a. a pipe [ 210 ] for fluid flow having pressure P 210 ; 
 b. a venturi arrangement [ 220 ] having a first venturi nozzle [ 221 ], a second venturi nozzle [ 222 ] and a branch [ 223 ] arranged therebetween; said first and second nozzles [ 221 ,  222 ] are connected to said pipe [ 210 ], such that a vacuum pressure P 220 , P 220 ,<P 210 , is created in said branch [ 223 ]; 
 c. a container [ 230 ] divided by a reverse osmosis membrane [ 235 ] into a first side [ 240 ], having pressure P 240 , P 240 >P 220 , and a second side [ 250 ]; 
 d. a first side inlet [ 245 ] connected to a source of contaminated water; 
 e. a first side outlet [ 246 ], for disposing remaining salts and/or minerals; 
 f. a second side outlet [ 256 ], for desalinated water; and 
 g. a fluid connection [ 225 ] between said second side [ 250 ] and said venturi's branch [ 223 ]; such that said second side is subjected to said vacuum pressure P 220    
 
       wherein said mechanism [ 200 ] further comprises a piston [ 226 ] configured to move backward and forward, according to the pressure differences (P 220 -P 240 ) between said vacuum pressure P 220  at said second side [ 250 ] and pressure P 240  at said first side [ 240 ], and draw said desalinated water from said contaminated water via said reverse osmosis membrane [ 235 ]. 
     
     
       5. The water desalination mechanism [ 200 ] according to  claim 4 , wherein said piston [ 226 ] comprises a sealing element [ 229 ] configured to isolate said desalinated water from said fluid. 
     
     
       6. The water desalination mechanism [ 200 ] according to  claim 4 , wherein said fluid connection [ 225 ] comprises a control valve [ 227 ], configured to control said backward and forward movement of said piston [ 226 ], such that said desalinated water is drawn in batches. 
     
     
       7. The water desalination mechanism [ 200 ] according to  claim 6 , wherein said first side [ 240 ] comprises a floating element [ 247 ] in mechanical connection [ 228 ] with said control valve [ 227 ], said floating element [ 247 ] is configured to activate and deactivate said control valve [ 227 ], according to said contaminated water level at said first side [ 240 ]. 
     
     
       8. A method for utilizing the pressure in a municipal pipeline to desalinate contaminated water, said method comprising the steps of:
 a. providing: (i). a venturi arrangement having a first venturi nozzle, a second venturi nozzle and a branch arranged therebetween; and (ii) a container divided by a reverse osmosis membrane into a first side and a second side; said container comprising a first side inlet connected to a source of contaminated water, a first side outlet for disposing remaining salts and/or minerals, and a second side outlet for desalinated water; 
 b. connecting said venturi's first and second nozzles to said pipeline;
 connecting said venturi's branch to said second side outlet for desalinated water, thereby utilizing vacuum created by said venturi arrangement for drawing desalinated water from said contaminated water via said reverse osmosis membrane and directing said desalinated water to said pipeline. 
 
 
     
     
       9. A method for utilizing the pressure in a municipal pipeline to desalinate contaminated water, said method comprising the steps of::
 a. providing: (i). a venturi arrangement having a first venturi nozzle, a second venturi nozzle and a branch arranged therebetween; and (ii) a container divided by a reverse osmosis membrane into a first side and a second side; said container comprising a first side inlet connected to a source of contaminated water, a first side outlet for disposing remaining salts and/or minerals, and a second side outlet for desalinated water; 
 b. connecting said venturi's first and second nozzles to said municipal pipeline; 
 c. connecting said venturi's branch to said container's second side via a conduit comprising a piston moving backward and forward, according to the pressure differences between vacuum created by said venturi arrangement and said first side of the chamber, thereby utilizing said vacuum for drawing said desalinated water from said contaminated water via said reverse osmosis membrane. 
 
     
     
       10. The method according to  claim 9 , further comprising a step of providing said piston with a sealing element, for isolating said desalinated water from the fluid passing in said pipe. 
     
     
       11. The method according to  claim 9 , further comprising a step of providing said conduit with a control valve, for controlling said backward and forward moving of said piston, thereby drawing said desalinated water in batches. 
     
     
       12. The method according to  claim 11 , further comprising a step of providing said first side with a floating element in mechanical connection with said control valve, for activating and deactivating said control valve, according to said contaminated water level at said first side. 
     
     
       13. A water desalination mechanism [ 100 ], comprising:
 a. a running pipe [ 110 ] for pressurized water 
 b. a venturi arrangement [ 120 ] for creating vacuum, said venturi arrangement [ 120 ] having a first venturi nozzle [ 121 ], a second venturi nozzle [ 122 ] and a branch [ 123 ] arranged therebetween; said first and second nozzles [ 121 ,  122 ] are connected to said pipe [ 110 ]; 
 c. a container [ 130 ] divided by a reverse osmosis membrane [ 135 ] into a first side [ 140 ] and a second side [ 150 ]; 
 d. a first side inlet [ 145 ] connected to a source of contaminated water; 
 e. a first side outlet [ 146 ] for disposing remaining salts and/or minerals; and 
 f. a second side outlet [ 156 ] for desalinated water; 
 
       wherein said second side outlet [ 156 ] is connected to said venturi's branch [ 123 ] and said first side inlet [ 145 ] is connected to said pipe [ 110 ] upstream of said first venturi nozzle [ 121 ], thereby making use of the vacuum created by said venturi arrangement [ 120 ] to draw said desalinated water from said contaminated water via said reverse osmosis membrane [ 135 ] and direct said desalinated water to said pipe [ 110 ].